<?php

/**
 * Allows multiple validators to attempt to validate attribute.
 * 
 * Composite is just what it sounds like: a composite of many validators.
 * This means that multiple HTMLPurifier_AttrDef objects will have a whack
 * at the string.  If one of them passes, that's what is returned.  This is
 * especially useful for CSS values, which often are a choice between
 * an enumerated set of predefined values or a flexible data type.
 */
class HTMLPurifier_AttrDef_CSS_Composite extends HTMLPurifier_AttrDef
{
	
	/**
	 * List of HTMLPurifier_AttrDef objects that may process strings
	 * @protected
	 */
	var $defs;
	
	/**
	 * @param $defs List of HTMLPurifier_AttrDef objects
	 */
	function HTMLPurifier_AttrDef_CSS_Composite($defs) {
		$this->defs = $defs;
	}
	
	function validate($string, $config, &$context) {
		foreach ($this->defs as $i => $def) {
			$result = $this->defs[$i]->validate($string, $config, $context);
			if ($result !== false) return $result;
		}
		return false;
	}
	
}

